package org.smart4j.framework.proxy;

import org.junit.Before;
import org.omg.PortableInterceptor.Interceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Method;

/**
 * 切面代理
 *
 * Created by chinalin on 2017/3/20.
 */
public abstract class AspectProxy implements Proxy{

    private static final Logger LOGGER = LoggerFactory.getLogger(AspectProxy.class) ;

    public Object doProxy(ProxyChain proxyChain) throws Throwable {
        Object result = null ;

        Class<?> cls = proxyChain.getTargetClass() ;
        Method method = proxyChain.getTargetMethod() ;
        Object[] params = proxyChain.getMethodParams() ;

        begin();
        try {
            if (intercept(cls,method,params)){
                before(cls,method,params);
                result = proxyChain.doProxyChain();
                after(cls,method,params,result);
            }else {
                result =proxyChain.doProxyChain() ;
            }
        }catch (Exception e){
            LOGGER.error("proxy failure",e );
            error(cls,method,params,e);
            throw e ;
        }finally {
            end();
        }
        return result;
    }
    public void begin(){

    }
    public boolean intercept(Class<?> cls,Method method, Object[] params) throws Throwable{
        return true ;
    }

    public void before(Class<?> cls, Method method, Object[] params) throws Throwable{

    }

    public void after(Class<?> cls, Method method, Object[] params,Object result) throws Throwable{

    }

    public void error(Class<?> cls, Method method, Object[] params, Throwable e){

    }

    public void end(){

    }
}
